Asked by Heidi
Beatrice throws the 1st calculator straight up from the edge of the roof of a building. She drops a 2nd calculator off the side of the building 2 seconds after she has thrown the first one. If the height of the building is 40m, what must the initial upwards velocity of the 1st calculator be so the two calculators to hit the ground at exactly the same time?
Answers
Answered by
bobpursley
first calc: hf=hi+vi*t-4.9t^2
second calc: hf=hi-4.9(t-2)^2
0=40+vi*t-4.9t^2
0=40-4.9(t-2)^2 well, two equations, two unknowns. start the with the second, solve for time, then put that into the first equation and solve for vi.
second calc: hf=hi-4.9(t-2)^2
0=40+vi*t-4.9t^2
0=40-4.9(t-2)^2 well, two equations, two unknowns. start the with the second, solve for time, then put that into the first equation and solve for vi.
There are no AI answers yet. The ability to request AI answers is coming soon!
Submit Your Answer
We prioritize human answers over AI answers.
If you are human, and you can answer this question, please submit your answer.